Freeman, Robert J., author
Prentice-Hall, 1999
Buku Teks
Henke, Emerson O.
PWS-Kent Publishing, 1988
Buku Teks
Gross, Malvern J., author
John Wiley & Sons, 1979
Buku Teks
Ginanjar, author
2015
UI - Tesis (Membership)
Hudson, Alastair, author
Sweet & Maxwell, 2000
Buku Teks